Configurable indicating device and method for monitoring and control in fluid systems

An apparatus for monitoring and/or controlling a fluid system includes a housing having at least one display mounted thereon and a sensor interface that includes at least one sensor configured to output signals corresponding to a sensed fluid characteristic. A computer readable memory is disposed within the housing and stores user configurable program parameters in a stored menu configuration partitioning the program parameters among a plurality of discrete menus. The apparatus further includes a user interface having an input device configured via outputting a menu reconfiguration command to adjust the stored menu configuration, and a processor disposed within the housing and configured to display the program parameters in the plurality of discrete menus according to the stored menu configuration. In an exemplary application, the apparatus is a differential pressure indicator having optional control/output features, internally or externally sourced 4-20 mA current output and infrared communication for uploading and/or downloading programming and data.